insouciant
01
无忧无虑的, 不在意的
having an unconcerned attitude, especially in situations where others might feel worried
例子
His insouciant attitude toward his homework made it clear he was n’t worried about grades.
他对作业的漫不经心的态度清楚地表明他不担心成绩。
With an insouciant wave, he dismissed the idea as if it were of no importance at all.
他漫不经心地挥了挥手，好像这个想法一点也不重要似的把它打发了。
